Pet brush



FIG. 1 is a perspective view of a pet brush showing my new design;

FIG. 2 is a left-side view of the pet brush showing in FIG. 1;

FIG. 3 is a right-side view of the pet brush showing in FIG. 1;

FIG. 4 is a back-side view of the pet brush showing in FIG. 1;

FIG. 5 is front side view of the pet brush showing in FIG. 1;

FIG. 6 is a top side view of the pet brush showing in FIG. 1; and,

FIG. 7 is a bottom side view of the pet brush showing in FIG. 1.

The broken lines illustrate environmental structure that forms no part of the claimed design. 

CLAIM We claim the ornamental design for a pet brush, as shown and described. 